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1.Round Broach, 2.we can make involute spline broach of all standard,and can make it as your requirement., 3.high process - details see: https://www.machineto.com/round-broach-10146784

1.HSS round broach
2.round broache is commonly used to processing bore.
3.high processing efficiency
4.standard: GB3831-83

HSS round broach

Nominal Dia.	Overall Length	Broaching Length	Pre-Broaching Hole Dia.
10	380.440	10~30	9.3
11	385.450	10~30	10.3
12			11.3
13	395.460	10~30	12.3
14			13.3
15			14
16	400~520	10~50	15
17			16
18	405~530	10~30	17
19			18
20			19
22	400~655	10~80	21
24			23
25			24
26			25
28	465~745	18~120	27
30	480~750	18~120	29
31			29.5
32	500~750	18~120	30.8
34	500~760	18~120	32.9
35			33.9
36			34.8
38			36.8
40			38.8
42	500~770	30~120	40.8
45			43.8
48	560~750	30~120	46.7
50			48.7
52			50.8
54			52.8
55			53.8
58			56.8
60			58.8
62			60.8
65	570~760	30~120	63.8
70			68.8
75			73.8
80			78.8
85			83.8